Rank	Countries/Territories	Count	Percent
1	United States	277	37.3%
2	China	149	20.1%
3	Germany	62	8.4%
4	Canada	29	3.9%
5	United Kingdom	26	3.5%
6	India	22	3%
7	Norway	13	1.8%
8	Singapore	10	1.3%
9	Australia	10	1.3%
10	Korea, Republic of	9	1.2%
11	Japan	8	1.1%
12	Iran, Islamic Republic of	8	1.1%
13	Netherlands	7	0.9%
14	Portugal	7	0.9%
15	Philippines	7	0.9%
16	South Africa	6	0.8%
17	Thailand	6	0.8%
18	Ireland	6	0.8%
19	Indonesia	5	0.7%
20	Cyprus	5	0.7%
21	Romania	5	0.7%
22	France	5	0.7%
23	Viet Nam	5	0.7%
24	Spain	4	0.5%
25	Poland	4	0.5%
26	Brazil	4	0.5%
27	Italy	3	0.4%
28	Malaysia	3	0.4%
29	Russia	3	0.4%
30	Saudi Arabia	3	0.4%
31	Nigeria	3	0.4%
32	Morocco	3	0.4%
33	Lebanon	2	0.3%
34	Chile	2	0.3%
35	Egypt	2	0.3%
36	Colombia	2	0.3%
37	Israel	2	0.3%
38	Iraq	2	0.3%
39	Uganda	2	0.3%
40	Taiwan	2	0.3%
41	Switzerland	1	0.1%
42	Slovakia	1	0.1%
43	Hong Kong	1	0.1%
44	Finland	1	0.1%
45	Bulgaria	1	0.1%
46	Mexico	1	0.1%
47	Kuwait	1	0.1%
48	Latvia	1	0.1%
49	Jordan	1	0.1%